Some paper

http://blog.csdn.net/easyjf/archive/2006/07.aspx

http://blog.csdn.net/BlueDestiny/archive/2006/07/04/872645.aspx 

http://www.example.net.cn/archives/2006/06/mixijpeoaoeiiae.html 

 

http://blog.csdn.net/shiningxyy/archive/2006/06/26/836370.aspx

http://gamedev.csdn.net/n/20060704/92293.html